Wrench



y I 1,613,981 Jan.11,1927. A E CARLBERG wRNcH Filed June 10, 1924 Patented ll, i927.

tlhllTElb STATES PATENT oFFics;

.AUGUST EDVIIN' CARLBERG, OF WORCESTER, BEASSACHUSETTS, ASSIGNOR TO XVALDEN- WORCESTER, INC., QF VORCESTER, MASSACHUSETTS, A CORPORATION OF MASSA CHUSETTS.

WRENCH.

Application filed June 10,

rihis invention relates to wrenches and is particularly concerned with Wrenches of the type in which the socket or like nut engaging member is pivotally associated with a pro- 5 jection substantially at right angles to the shank.

'lhis invention is in the nature ot an improvement on the Wrench described in my eopending application, Serial No. 531,010,

'iii .tiled January 23, 1922, Patent No. 1,542,386,

granted rlune 15, 1925.

lt is the object ot the present invention. to provide a Wrench in which the angular relation between the shank and the nut engaging portion niay be readily changed to adapt the Wrench tor use in restricted places and under diiticult conditions and which will be ot a nature suited for quantity nianutacturingjf and economical production.

Another object of the invention is to provine a Wrench oi the type described in Which the sockets are removably retained upon the shank so as to be readily interchangeable to provide different size nut engaging portions. I

A further object ot the invention is to provi de a Wrench socket or adapter for use with Shanks ot the type described, having a cylindrical hole thru the body of the socket or adapter, whichV tits upon said shank, with a spring pressed ball or plunger projecting into said hole and adapted to engage the shank in place, and to provide a novel method for inserting the spring 35 pressed ball in the socket member or adapter and for securing th-e ball in place.

A .good understanding of the invention may be had from the following description ot several specific 'terms oit embodiment thereof, reference being had to the accompanying` drawings, in which:

Figure 1 is an elevation of the single ended type ot' Wrench embodying my improved construction with the adapter and Wrench socket thereot shown in cross section to show the relative position of the parts.

Figure 2 is an elevation ot a double ended type of wrench with one oi: the nut engaging portions thereof in cross section to illustrate the relative position ot the parts.

Figure 3 is a fragmentary view ot a inodiiied form of the Wrench.

Figure 4 is a part sectional View of a .comparatively little effort as the curved 1924. Serial N0. 719,060.

modified manner of detachably connecting he socket to the shank. Y

Figure 5 serves to illustrate one method mounting the retaining ball in the wrench head.

ln the embodiment illustrated in Figure 1, the shank H hasits end portion 5 bent at substantially right angles to the axis thereof, to receive the Wrench member, said bent portion being provided with groove 7.

The Wrench head or adapter 9 is provided with a bor-e 10, adapted to it upon the shank portion 5, and Witha further bore 12, substantially at right angles to the bore 10. For the purpose ot securing the head or adapter 9 on the shank portion 5, a ball 14 is preferably pressed into the groove 7 by such means as spring 16. rlhus it Will be seen that the head 9 may be pulled endWise from the portion 5, or inserted thereon With bottom of groove 7 pushes the ball 14 in- 5 wardly against the spring 1G, however, the ball 14 serves to retain the Wrench member securely in place upon the shank and prevents loss or accidental slipping of the Wrench member from the shank. Portion 0 5 is shown as round and head 9 may pivot thereupon, allowing the shank H to assume any desired angular relation to the nut engaging portion. Manifestly, portion 5 may be square or polygon shape it it is desired that the head assume delinite predetermined relationship to the shank.

The head or adapter 9 is provided with a projection 20, of square cross` section, adapted for the engagement With a pluralityr of socket members 24, having the nut opening or engaging recesses 26 of ditl'erent sizes 'formed therein. Projection 2O is also pr-ovided with a spring-pressed trictional retaining ball 14a, for detachablyy holding socket members 24 in place. VOne size oi shank H and head or adapter 9 nay thus serve t'or the .manipulation ot a complete series oli varying sized standard socket menibers 24, which may be engaged with the projection 20 by the simple operation ol pushing them into place or of pulling them therefrom.

In the herein disclosed invention, it is my purpose to especially provide :tor the easy insertion and retention of the ball members lll, at approximately the midpoint of the shank re; eiving hole ot' the socket. This,

I accomplishythru the means ot the hole 12.

which is provided thru the wall ot the bore l0 at a point approximately diametrically oppositeto the position ot' the ,ball 14, and

thetavityin which it is retained.

Figure 2 shows a double ended socket et) with a bore l() theiethru for fitting upon the turned ends 5 of the double ended shank H2. In this embodiment the hole l2 is provided in one ol' the socket members, thru which the hole 17 may be drilled yinto theother socket -in the,A socket member.

member andthe spring' lo and` ball lsl inserted and secured therein.

Figure 3 illustrates a shank Il with a pino projecting .at ,right angles tl'ieret'roin and a single socket 32 adapted to be secured directly upon the shank 5 andv provided with a spring pressed ball l-lY lor projecting into ythe groove 7. aniilwvitli a hole l2 in the boielO 1opposite* `the vbail .whereby the ball caribe easily inserted and retained in place.

Vinthenoppositev wall of the bore l0; the

splllg. 1,6 and the balllllare then( inserted in thehole 17 and the edges of `the hole 17 bent inward by means oi a punch orthe like.insefitedthruthe hole l2 to 'form the prongsO to hold the ,ball in place. To permit'dislodgingrot. theball l-flin case it becomes stuck in retracted position in the holel vl-Tjan aperture 3G may be providedas illustrated thru which a small punch or nail may Vbe inserted for dislodging the' ball il or ,ifunecessary to drivethe ball out of the hole ,17.

It is to benoted that in .theembodiments.

otl FiguresZ, 3, and 5, thedhole l2 is iiisidethesocket so that .the outward :i1/)pears ance ot the wrencliris not marred oi' changed b v this method of securing the ball in piace and injFiguie l, the count-ersuuk `upper portion .of thefhole l2 tits Yin with the generalrontmii' of the wrench so that Ythe hole is scarcely noticeable.

I have,l therefor@ provided a ready means j for detachably and pivotally securing` the wrench or socket members on the right angular projections from '.the shank which Will not detract from or inar the appear- -anee of the wrench and which can be easily and` economically applied to the wrench.

Various modiicationsf and changes may be made in the embodiments ot" the inven- Atieni described and parts of the devices may be used without others without departing troni the spirit of the invention or the scope ol" thet appended claims.

I claim:

l. In a wrench combination, a shank, itho entire shank being straight, saidshanklhavinga projection extendingl at right angles there'l'i'oui, a wrench socket having a hole .therein at substantially right angles to tlie axis ot; the nut engaging portion tliereo'l, said hole litting, upon said projection, one ot .said interlitting members being provided with an annular groove, and a spring-pressed ball .in the other of said members projecting into said groove, to permit rotation ot said socket on said projection but restrain rei moval ot' said socket from said projection.

In a socket wrench, a head member, provided with axially arranged work engaging sockets, said head memberv having a shank engaging recess having its axis at substantially right angles to lthe axis ot the' atoresaidsocket, s a-idlhead having an `axial bore therein extending inwardly from one .et said sockets to thev opposite side ot said recess and a spring pressed latch means projecting into said recess from the bore in .said opposite sideto vengage and .trio tionally ,retain a shank inserted therein.

3. In a wrench socket, a `nut-engaging portion having a shank-receivingi` bore at right angles to theaxis thereof, and a. hole inside said nut-engaging portion, extending.

`thru lliewall ot' said bore, and a siringpressed locking` means projecting .into said bore opposite said. hole.

4f. Anadapter lor socket wrenchescoinprising a body portion, a socket engaging member projecting therefrom, means in said socket engaging .member for trictionally retaining a wrench socket thereon, the said body portion' having a bore at substanliall",Y

"right angles to saidV socket vengaging.member adapted to detachably fit upon the end of a wrench shank and ,means in said bore tor frictionally retaining said-.adapter on a. wrench shank.

In testimony whereof I have aliixed .my signature! to this` specification.

AUGUST,l EDIVIN GARLBERG.

til) 

